This application relates to
dry powder compositions for intranasal delivery. Specifically, it relates to a pharmaceutical composition in
dry powder form for intranasal application, the pharmaceutical composition comprising
solid particles of at least one
active agent and
solid particles of a
diluent, the pharmaceutical composition being substantially free of excipients other than the
solid diluent, wherein the pharmaceutical composition has at least 90% of the at least one
active agent having particles with an average particle size of 10-30 micrometers, and less than 10% of the at least one
active agent having particles with an average particle size equal to or less than 5 micrometers. The
diluent particles have an average particle size of 30-200 micrometers. This application also relates to an apparatus and an improved
spray drying method for preparing the pharmaceutical compositions of the invention in
dry powder form.